👉 Fluid, in its various forms, refers to substances that flow and adapt to their environment. When we talk about "varying fluid," we're discussing liquids that change in composition, density, or state under different conditions. For instance, water, a common fluid, can exist in solid (ice), liquid (water), and gas (water vapor) states depending on temperature and pressure. Another example is blood, a complex fluid in living organisms, which can vary in composition based on the body's needs, such as changes in oxygen levels or clotting factors. In industrial settings, fluids like oil and gas can also vary in density and viscosity, affecting their flow properties and applications. Thus, the term "varying fluid" encapsulates a broad range of substances that adapt to their surroundings, each with unique characteristics and behaviors.